In situ grown NiFeP@NiCo2S4 nanosheet arrays on carbon cloth for asymmetric supercapacitors

Wan, Liu; He, Chenyang; Chen, Dequan; Liu, Jiaxing; Zhang, Yan; Du, Cheng; Xie, Mingjiang; Chen, Jian

doi:10.1016/j.cej.2020.125778

Cited by 106 publications

(55 citation statements)

References 69 publications

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“…In the low-frequency region, the slope of the linear line represents the Warburg resistance (Z w ) indicating the electrolyte transfer ability. [49] CoNi-DH@ Ti 3 C 2 T x shows the lowest resistance (R ct = 0.264 Ω) compared to CoNi-DH (R ct = 0.504 Ω) or Ti 3 C 2 T x (R ct = 0.286 Ω), suggesting that CoNi-DH@Ti 3 C 2 T x has fast dynamics in the Faraday reaction. CoNi-DH@Ti 3 C 2 T x also shows the largest slope.…”

Section: Electrochemical Propertiesmentioning

confidence: 94%

Hierarchical Cobalt‐Nickel Double Hydroxide Arrays Assembled on Naturally Sedimented Ti₃C₂T_x for High‐Performance Flexible Supercapacitors

Bai

Zhang

Guo

et al. 2021

Advanced Sustainable Systems

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of the promising candidates for energy storage due to the high power density, environmental friendliness, remarkable charge/discharge capability, long cycling life, and safety. [4,5] Processing nanomaterials into freestanding films with high conductivity and good mechanical stability is of great significance for supercapacitors. To choose appropriate nanomaterials for high-performance supercapacitors, remarkable surface properties, inherent high strength and electrical conductivity must be considered. [6,7] In the search for alternatives that provide all these characteristics, MXene, a recently discovered 2D material shows great potential. MXenes is a novel candidate of the 2D family (MXenes described as M n+1 X n T x , where M, X, and T x usually represent the early transition metal, C or N, and adsorbed surface functional groups such as OH, O, and F, where n = 1, 2, or 3). [8] 2D transition metal carbide and nitride MXene (including Ti 3 C 2 T x , Mo 2 CT x , and V 4 C 3 T x ) are excellent electrode materials for supercapacitors due to the high metallic conductivity, excellent cycling stability, and surface chemical groups galore. [9] The preparation of MXene freestanding film by vacuum-assisted filtration is the optimal choice to achieve these properties. [10] For instance, rolled Ti 3 C 2 T x films show a high conductivity of 150 000 S m −1 and gravimetric capacitance Flexible electrodes with excellent energy storage and conversion properties that can be produced by a simple process are highly desirable for supercapacitors. Herein, Cobalt-Nickel double hydroxide (CoNi-DH) micro-nanosheet arrays are prepared uniformly on naturally sedimented Ti 3 C 2 T x films by an etching-deposition-growth process to form a CoNi-DH@Ti 3 C 2 T x heterostructure. The naturally sedimented Ti 3 C 2 T x film serves as the substrate to minimize aggregation of the CoNi-DH nano arrays to enhance the electrical conductivity. Furthermore, the hierarchical structure comprised of the CoNi-DH interconnected nanoarrays promotes electrolyte access. By taking advantage of the excellent electrical conduction and high theoretical specific capacitance, the flexible CoNi-DH@Ti 3 C 2 T x electrode in the supercapacitor delivers a superior specific capacitance of 919.5 F g −1 at 1 A g −1 , and remarkable capacitance retention of 89.6% after 5000 cycles at 20 A g −1 . Density-functional theory calculations are performed to investigate the charge density difference and partial density of states of CoNi-DH@Ti 3 C 2 T x and the theoretical assessment suggests that the chemical bonds between Ti 3 C 2 T x and CoNi-DH are critical to the charge transport, electrical conductivity, and structural stability.

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Section: Electrochemical Propertiesmentioning

confidence: 94%

Hierarchical Cobalt‐Nickel Double Hydroxide Arrays Assembled on Naturally Sedimented Ti₃C₂T_x for High‐Performance Flexible Supercapacitors

Bai

Zhang

Guo

et al. 2021

Advanced Sustainable Systems

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“…For example, the NiFeP@NiCo 2 S 4 /carbon cloth (NiFeP@NiCo 2 S 4 /CC) hybrid electrode with NiFeP@NiCo 2 S 4 heterostructure was successfully manufactured by using a novel combination of hydrothermal reaction, phosphorization treatment, and electrodeposition technique strategy (Fig. 15 a) [ 148 ]. Compared with NiFeP/CC and NiCo 2 S 4 /CC, the NiFeP@NiCo 2 S 4 /CC hybrid electrode demonstrated higher specific capacitance (Fig.…”

Section: Regulation Of Tmc’s Electronic Structurementioning

confidence: 99%

Recent Developments of Transition Metal Compounds-Carbon Hybrid Electrodes for High Energy/Power Supercapacitors

et al. 2021

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Due to their rapid power delivery, fast charging, and long cycle life, supercapacitors have become an important energy storage technology recently. However, to meet the continuously increasing demands in the fields of portable electronics, transportation, and future robotic technologies, supercapacitors with higher energy densities without sacrificing high power densities and cycle stabilities are still challenged. Transition metal compounds (TMCs) possessing high theoretical capacitance are always used as electrode materials to improve the energy densities of supercapacitors. However, the power densities and cycle lives of such TMCs-based electrodes are still inferior due to their low intrinsic conductivity and large volume expansion during the charge/discharge process, which greatly impede their large-scale applications. Most recently, the ideal integrating of TMCs and conductive carbon skeletons is considered as an effective solution to solve the above challenges. Herein, we summarize the recent developments of TMCs/carbon hybrid electrodes which exhibit both high energy/power densities from the aspects of structural design strategies, including conductive carbon skeleton, interface engineering, and electronic structure. Furthermore, the remaining challenges and future perspectives are also highlighted so as to provide strategies for the high energy/power TMCs/carbon-based supercapacitors.

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“…More- over, large surface energy and low ferromagnetism in these nanostructured materials may lead to intense aggregation, causing reduced surface area and number of electroactive sites, resulting in poor performance [185]. To avoid these issues and fully utilize electrochemical active materials, BMCs compound composites with various nanoarchitectures such as heteronanoparticles [186], core-shell nanotubes [187,188], yolk-shell microspheres [189,190], nanosheets arrays [191], wire-like structure [192], and core-shell nanostructured arrays [193] have been directly grown on diverse conductive templates. As a representative example, a 3D macroporous lollipop-like MnCo 2 S 4 /FeCo 2 S 4 heterostructure was deposited on a porous NCF via a two-step hydrothermal approach accompanied with an ion exchange process [194].…”

Section: Fabrication Of Hierarchical Nanohybrids Of Bmcs With Metal Compoundsmentioning

confidence: 99%

“…These compound composite materials provide multiple reactive equivalents, intriguing hetero-interfaces, distinctive ion-permeable bulk microstructure, fast pathways for ion/electrolyte transfer, and appealing synergetic structural/compositional/ componental contributions, resulting in enhanced electrochemical performance. Until now, many electroactive materials including metal oxides (NiO [196], MnO 2 [230], NiMoO 4 [184], NiCoO 2 [193], Ni 3 V 2 O 8 [231], CoMoO 4 [232]), metal hydroxides (Co(OH) 2 [192,199,233], Ni(OH) 2 [188,201,202,234], Ni-Mn LDH [235,236], Ni/Co LDHs [237], FeOOH [230], Co x Ni 1−x -(OH) 2 [230], NiCo 2 (CO 3 ) 1.5 (OH) 3 [238]), metal sulfides (CoS x [239], CoS 2 [183], Co 3 S 4 [240], Co 9 S 8 [181,189,241], MoS 2 [242]), metal selenides (MoSe 2 [27,243], Ni 3 Se 2 [19]), metal phosphides (NiP [198], NiFeP [191]), and polypyrrole [244,245] have been combined with diverse BMCs as high performance electrodes for SCs. Most of these diversified heterostructured BMCs nanoarrays are grown on highly conductive substrates such as Ni-F, graphene, 3D graphene sponge, carbon paper, and CC.…”

Section: Reviewsmentioning

confidence: 99%

Role of binary metal chalcogenides in extending the limits of energy storage systems: Challenges and possible solutions

et al. 2021

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Binary metal chalcogenides (BMCs) have shown better electrochemical performance compared with their mono metal counterparts owing to their abundant phase interfaces, higher active sites, faster electrochemical kinetics and higher electronic conductivity. Nevertheless, their performance still undergoes adverse decline during electrochemical processes mainly due to poor intrinsic ionic conductivities, large volume expansions, and structural agglomeration and fracture. To tackle these problems, various strategies have been applied to engineer the BMC nanostructures to obtain optimized electrode materials. However, the lack of understanding of the electrochemical response of BMCs still hinders their large-scale application. This review not only highlights the recent progress and development in the preparation of BMC-based electrode materials but also explains the kinetics to further understand the relation between structure and performance. It will also explain the engineering of BMCs through nanostructuring and formation of their hybrid structures with various carbonaceous materials and three-dimensional (3D) templates. The review will discuss the detailed working mechanism of BMC-based nanostructures in various electrochemical energy storage (EES) systems including supercapacitors, metal-ion batteries, metal-air batteries, and alkaline batteries. In the end, major challenges and prospective solutions for the development of BMCs in EES devices are also outlined. We believe that the current review will provide a guideline for tailoring BMCs for better electrochemical devices.

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In situ grown NiFeP@NiCo2S4 nanosheet arrays on carbon cloth for asymmetric supercapacitors

Cited by 106 publications

References 69 publications

Hierarchical Cobalt‐Nickel Double Hydroxide Arrays Assembled on Naturally Sedimented Ti₃C₂T_x for High‐Performance Flexible Supercapacitors

Hierarchical Cobalt‐Nickel Double Hydroxide Arrays Assembled on Naturally Sedimented Ti₃C₂T_x for High‐Performance Flexible Supercapacitors

Recent Developments of Transition Metal Compounds-Carbon Hybrid Electrodes for High Energy/Power Supercapacitors

Role of binary metal chalcogenides in extending the limits of energy storage systems: Challenges and possible solutions

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In situ grown NiFeP@NiCo2S4 nanosheet arrays on carbon cloth for asymmetric supercapacitors

Cited by 106 publications

References 69 publications

Hierarchical Cobalt‐Nickel Double Hydroxide Arrays Assembled on Naturally Sedimented Ti3C2Tx for High‐Performance Flexible Supercapacitors

Hierarchical Cobalt‐Nickel Double Hydroxide Arrays Assembled on Naturally Sedimented Ti3C2Tx for High‐Performance Flexible Supercapacitors

Recent Developments of Transition Metal Compounds-Carbon Hybrid Electrodes for High Energy/Power Supercapacitors

Role of binary metal chalcogenides in extending the limits of energy storage systems: Challenges and possible solutions

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Hierarchical Cobalt‐Nickel Double Hydroxide Arrays Assembled on Naturally Sedimented Ti₃C₂T_x for High‐Performance Flexible Supercapacitors

Hierarchical Cobalt‐Nickel Double Hydroxide Arrays Assembled on Naturally Sedimented Ti₃C₂T_x for High‐Performance Flexible Supercapacitors